perl trim whitespace

The string class in Java has a trim () to remove the space characters before and after the string, and the trim () method in jquery can delete the string before and after the character variable. But there is no corresponding trim () method in

In other programming languages, Functions LTrim and RTrim are used to remove spaces and tabs from the beginning and end of a string, respectively. Some also provide the function trim to remove whitespace characters at both ends of the string. Perl

This article mainly introduces Perl delete leading and trailing blanks (remove left and right spaces, white space characters), this article gives a number of methods to achieve this requirement, the need for friends can refer to the following In

　　String typeIn Python, string types can be used in pairs of single quotes, such as: ' Hello, China. can also be used in pairs of double quotes, such as: "Bad, I drop country." The code is as follows:　　Through. Title (), you can turn the first

Special characters in regular expressions Character implication \ As a turn, that is, the characters usually after "\" are not interpreted in the original sense, such as the/b/matching character "B", when B is preceded by a backslash/\b/, to

To generate a file name for a graphics file in the R language, the prefix is Fitbit, followed by the month after, plus ". jpg", first not Baidu, tried other languages similar grammar, not a viable:In C #: "Fitbit" + month + ". jpg"VB: "Fitbit" &

Basic knowledge CharacterPOSIX Extended Regular Expression functionsPerl-compatible Regular expression functionsFrom the message verification. The format of the message: Tenssun@163.com Where Tenssun is the user name, 163.com is the server name

Reprinted from: http://blog.csdn.net/kkobebryant/article/details/267527 Basic syntax for regular expressions First, let's take a look at two special characters: ' ^ ' and ' $ ' they are used to match the beginning and end of the string,

There are two sets of regular expression function libraries in PHP. The set is provided by the Pcre (Perl Compatible Regular Expression) library. The Pcre library uses the same syntax rules as Perl to implement pattern matching for regular

There are two sets of regular expression function libraries in PHP. The set is provided by the Pcre (Perl Compatible Regular Expression) library. The Pcre library uses the same syntax rules as Perl to implement pattern matching for regular